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https://issues.apache.org/jira/browse/COUCHDB-1309?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Filipe Manana resolved COUCHDB-1309.
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Resolution: Fixed
Fix applied to 1.2.x and master.
> File descriptor leaks on design document update and view cleanup
> ----------------------------------------------------------------
>
> Key: COUCHDB-1309
> URL: https://issues.apache.org/jira/browse/COUCHDB-1309
> Project: CouchDB
> Issue Type: Bug
> Reporter: Filipe Manana
> Assignee: Filipe Manana
> Fix For: 1.2
>
> Attachments:
> 0001-Fix-ets-lookup-case_clause-error-after-ddoc-is-updat.patch,
> 12x-0001-Add-ddoc_updated-event.patch,
> 12x-0002-Shutdown-view-group-on-ddoc-update.patch, couchdb-1309_12x.patch,
> couchdb-1309_trunk.patch, master-0001-Add-ddoc_updated-event.patch,
> master-0002-Shutdown-view-group-on-ddoc-update.patch,
> master-0002-Shutdown-view-group-on-ddoc-update.patch
>
>
> If we add a design document with views defined in it, open the corresponding
> view group (by querying one of its views for e.g.), then update the design
> document in such a way that the view signature changes (changing a view's map
> function code for e.g), the old view group remains open forever (unless a
> server restart happens) and keeps it's view file reference counter active
> forever.
> If a view cleanup request comes, the old view file is not deleted since the
> reference counter is not dropped by the old view group, keeping the file
> descriptor in use forever.
> This leakage is different from what is reported in COUCHDB-1129 but it's
> somehow related.
> The attached patch, simply shutdowns a view group when the design document is
> updated and the new view signature changes, releasing the old view file
> descriptor (as soon as no more clients are using the old view).
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